Self-propelled road-builder&#39;s vehicle.



SELF PROPELLED ROAD BUILDERS VEHICLE. APPLICATION FILED MAY 14, 1914.

1,1 1 6,788. Patented Nov. 10, 1914.

A TURNEY HARVEY W. BELYL, OIF YONKERS, NEW YORK.

SELF-PROPELLED ROAD-BUILDERS VEHICLE.

Specification. of Letters Patent.`

Patented Nov. 1.0, 1914.

Application illed'lay 14, 1914. Serial N o. 838,445.

To all 'ui/10111 it 11u/y (fonce/'1a.'

Be it known that I. HARVEY W. BELL, a citizen of the United States ofAmerica, and

a resident of Yonkers, lVestchester county,.

and State of New York, have invented certain new and u'sefulImprovements in Self- Propelled Road-Builders Vehicles, of which thefollowing is a specification, reference being had to the accompanyingdrawings, forming apart thereof.

My invention relates to a self-propelled road builders vehicle', and itsobject is to provide a self-contained outfit in which material may beheated and transported.

More specifically its object is to provide on 'a vehicle a steampropelling engine and a receptacle withl a heater pipe coil and a steamgenerating plant for providing steam for the engine and either directlyorindirectly to the heater pipe coil.

Another object is to provide a closed receptacle with heater pipe. coilsand a steam actuated air compressor for supplying pressure to thereceptacle.

These and other objects of the invention will appear in the followingspecifica-tion, in which I will describe my invention, the novelfeatures of which Will be set forth in the appended claim.

Referring to the drawings: Figure 1 is a side elevation of an apparatuswhich embodies my invention. `In this figure a part of the tankreceptacle is broken away to show more clearly the location of theheater pipe coil. Fig. 2 is a transverse section of a part of theapparatus shown in Fig. 1, the section being taken on the line 2--2 ofthe latter figure.

Like characters of reference designate corresponding parts in all thefigures.

10 designates a Wheeled vehicle upon which is a steam generator 11,preferably in the form of an oil burner boiler. A steam engine 12 isarranged and connected to propel the vehicle.

13 is a cylindrical tank receptacle over and partly surrounding which isa Water tank 14.

15 is a steam actuated air compressor.

A Water pipe 16 leads from the Water tank to the boiler through asuitable injector or pump which is not shown.

17 is the steam pipe from theboiler. A branch pipe 18, controlled by a.valve 19, provides means for connecting a hose or other pipe with thesteam supply to lead it to a tank car or other extraneous apparatus.

The steam supply pipe 17 is connected by a pipe 20, controlled by a.valve 21 With the engine, and the engines exhaust is connected by a pipe22 with a heater pipe coil 23 within the receptacle, through which, 'theexhaust steam passes and from which it goes into the atmosphere throughan outlet 24. A valve-controlled by-pass 25 pro-vides means for leadinglive steam from the boiler to the heater pipe coil. The steam supplypipe is .connected with the steam inlet of the air compressor .,-by avalve controlled pipe 26 and the steam outlet from the compressor isconnected by pipe 27 With the pipe 22 which leads to the heater pipecoil.

28 isan air pipe leading from. the compressor to the upper part of thetank receptacle 13.

I Will now describe the operation of the apparatus which has beendescribed. This apparatus is especially designed for road builders usebut of course my intention is that it be put to any other use 'to .Whichit is adapted. It is used to transport hot bituminous or other materialswhich are in molten condition when heated. Such materials are usuallydelivered in tank cars which are provided with heater pipe coils. Myapparatus may be run alongside of such a car and steam supplied from itsboiler to the heater pipe coil of the car through the connection 18.l/Vhen the material has been melted it may be transferred to the tankreceptacle 13. The vehicle propelled by the engine 12 may be then movedto the desired place or places, the exhaust steam from the engine beingutilized to keep the material in molten or heated condition. If the'vehicle has been at rest and a quicker heating effect is desired than isobtainable from thel exhaust steam from the engine, live steam may beintroduced into the heater pipe coil through the by-pass 25. The by-passmay be used also during periods of rest of the engine. The position ofthe Water tank 14 is a convenient one and is such that the Water in itabsorbs a part of the heat of the tank receptacle 13. j

It is often required that the material in the tank receptacle bedischarged therefrom by pressure. The tank is therefore so made that itmay be closed. Obviously a steam pipe may be led from the boiler intothe tank for the purpose of getting pressure therein, but as themoisture of the steam has a deleterious effect upon some of thematerials which are carried 1n such an apparatus as this, I prefer toprovide the steam thereon, a heater pipe coil Within the tankreceptacle, a water tank over and partly surroundlng sald receptacle, asteam-actuated compressor for produclng pressure Within said receptacle,a steam engine a'rranged to propel the vehicle, a steam connectlon 'fromthe boiler to the engine, a

steam connection from the engine to thev heater pipe coil, a by-passconnection from the boiler to the heater ipe coil, a steam connectionfrom the boller to the compressor, a steam connection' from thecompressor to the heater pipe coil, and a water connection between thewater tank and the boiler.

In testimony whereof, -I have hereunto set my hand this 11 day of May,1914, in the presenceo two subscribing wltnesses.

HARVEY W. BELL.

i Witnesses:

F. GRAVES, ETHEL COHEN.

